Added two words for analyzing the contents of RAM: FIRST-RAM-DEF identifies the base of the RAM dictionary, and RAM-PTRS uses a conservative range comparison to identify possible pointers to RAM in RAM.

Switched to using a variable farcall reflector. The reflection path is controlled by r11 (a callee-saved high register generally safe from other changes and available for ISRs). This eliminates the need for call relocations when moving code from RAM to Flash, since the reflector region can be adjusted to precisely alias the amount of code in Flash.